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高隐身飞行器多采用无尾飞翼布局,此种布局具有很多优点,但是在动态特性上存在一些新问题,造成了飞行器稳定和操纵的困难。本文采用喷流控制器对飞机进行辅助控制,以此来获得此类飞机较好的操稳性能。喷流控制器位于机翼前缘,可以产生较大的控制力矩,从而对飞机进行纵向和航向控制,改善飞机的操纵特性。为了对增加喷流控制的飞翼布局飞机机动特性进行仿真,并考虑到其气动特性较传统三角翼面飞机复杂(即使在常规机动状态下,飞机的气动力和力矩也表现出较强的非线性特征,且呈现多轴耦合),本文先对飞翼布局飞机进行了全量非线性六自由度建模,并通过模糊逻辑控制方法对喷流控制器进行控制。仿真结果表明,增加喷流控制器后提高了飞翼布局飞机的任务性能和安全性能,飞机能够更快速准确的跟踪控制指令。
High-stealth aircraft use more tail-free wing layout, this layout has many advantages, but there are some new dynamic characteristics, resulting in the stability and manipulation of aircraft difficulties. In this paper, jet controller is used to control the aircraft in order to obtain a better handling performance of such aircraft. The jet controller, located on the leading edge of the wing, produces a large amount of control torque to control the aircraft in both longitudinal and heading directions and to improve the maneuverability of the aircraft. In order to simulate the aircraft’s flight characteristics with jet-controlled flying-wing layout and considering its aerodynamic characteristics are more complex than those of conventional delta-wing aircraft (even under normal maneuvering conditions, the aircraft aerodynamics and moments also show strong non-aerodynamic Linear characteristics and multi-axis coupling). In this paper, a full-scale nonlinear 6-DOF modeling is performed on the flying wing aircraft and the jet controller is controlled by fuzzy logic control. The simulation results show that the mission performance and safety performance of the flying wing layout aircraft are improved after the jet controller is added, and the aircraft can track the control instructions more quickly and accurately.